Java, Bali, Lombok, Sumbawa forecast by Craig Brokensha (issued Tuesday 19th April)

Best Days: Wednesday morning, Thursday afternoon onwards

This week and weekend (Apr 20 - 24)

Today a slight lift in S/SW groundswell should be providing 4-5ft sets across exposed breaks, with a slow drop due through tomorrow, bottoming out early Thursday morning. Conditions are looking good for exposed spots with a light morning offshore tomorrow morning ahead of afternoon E/SE trades.

There's been no change to Thursday's and Sunday's S/SW groundswell pulses, with the first for Thursday due to reach 4-5ft across swell magnets into the mid-late afternoon, easing back slowly from 3-5ft Friday morning.

A secondary better pulse is due to build slowly Saturday afternoon and peak Sunday morning offering larger sets in the 6ft range across exposed breaks.

Fresher E/SE trades are due to develop from Thursday (lighter and more variable early morning), persisting Friday before slowly weakening from Saturday into early next week.

Next week onwards (Apr 25 onwards)

Tuesday's final pulse of long-range and more SW groundswell is still on track, with the polar front producing this swell currently firing up south-east of South Africa, producing a fetch of slow moving SW gales.

A very inconsistent SW groundswell will result, arriving overnight Monday and peaking through Tuesday to an inconsistent 4-6ft across exposed breaks (likely into the afternoon).

The swell should ease through Wednesday, with the next decent swell due Thursday.

A strong and powerful mid-latitude low is forecast to develop between Heard Island and Western Australia on Saturday, aiming a strengthening fetch of severe-gale to storm-force S/SW winds through our southern swell window.

If all goes to plan, a moderate sized S/SW groundswell is due off this low, building later Wednesday and peaking Thursday in the 5-6ft range across the region. Due to the tricky nature of these systems, we'll have to review this swell over the coming updates.

16 day Bali Forecast Graph
16 day East Java Forecast Graph
16 day Sumbawa Forecast Graph